Salinity

AccuraSea Seawater Reference Solution from Two Little Fishies is the calibration solution of its kind! Made from pure natural sea water, it has been micron filtered, UV sterilized, and then adjusted read more ››

When you need absolutely accurate salinity conditions in your aquarium, you're going to need an H2 Ocean Seawater Refractometer. Unlike other refractometers on the market, the H2 Show Refractometer read more ››

Because of the unique design of the Deep Six Hydrometer, the hobbyist can take a water sample at six inches in depth without submerging their hands in the water, thus avoiding the possibility of read more ››

What is an Additional Shipping Item?

Some products, due to weight or size of the item, require additional shipping charges. These items are indicated by the " " symbol.

If you want to know how much your shipping costs will be, just add the item to your shopping cart and your shipping costs will be adjusted to reflect the additional shipping charges. You can then decide if you wish to order the item or not.

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Mail Order Pet Supplies (or MOPS as we're often referred to) was created in 1996 with the objective of delivering affordable prices to
Tropical Fish Hobbyists! Over the years we have used our warehousing, logistic and electronic capabilities to bring pond, reptile, bird and other pet products
to our customers. Through MOPS - Aquarium Supplies we are offering high-quality, brand name Aquarium products including filters, heaters, pumps, lighting, nutrition and much more for the Tropical Fish Hobbyist.